_Y_-20
_IMG_05_21-tetrad_analysisCD.jpg
The tetratypes (<b>T</b>) are generated by a crossover between either of the genes and the <strong>centromere</strong>.
The four genotypes are found in a 1:1:1:1 ratio,
as predicted by <strong>independent assortment</strong> of <b>unlinked</b> genes.